The surface of glass can be engraved with characters by a laser marking machine

Home >> content-21 >> The surface of glass can be engraved with characters by a laser marking machine

The surface of glass can be engraved with characters by a laser marking machine

Laser marking technology has been widely applied in the surface treatment of various materials due to its advantages such as high precision, non-contact processing and environmental friendliness. As a common brittle material, the surface marking of glass has always been a technical challenge. However, with the continuous development of laser technology, engraving on glass surfaces has become a reality and has been widely applied in multiple fields. This article will provide a detailed introduction to the technical principles, application scenarios and advantages of laser marking on glass surfaces.

I. Principle of Laser Marking Technology
Laser marking machines achieve marking effects by irradiating the surface of materials with high-energy-density laser beams, causing physical or chemical changes in the materials. For engraving on the surface of glass, laser marking machines mainly utilize the thermal effect and photochemical effect of lasers.

1. Thermal effect: The high energy of the laser beam causes a rapid local temperature rise on the glass surface, leading to melting or vaporization of the glass surface and thus creating an engraving effect. This method is suitable for deeper engraving requirements.
2. Photochemical effect: The energy of the laser beam excites the chemical bonds on the glass surface, causing chemical reactions and resulting in color changes or surface microstructure changes, thereby achieving a marking effect. This method is suitable for relatively shallow engraving requirements and can maintain the integrity of the glass surface.

Ii. Implementation Methods of Laser Marking on Glass Surfaces
Laser marking on the surface of glass can be achieved through the following methods:

(1) CO? Laser marking
CO? The wavelength of the laser marking machine is 10.6 micrometers, which belongs to the far-infrared light range and has a good absorption effect on glass. CO? Laser marking machines can achieve high-precision engraving effects and are suitable for fine marking on glass surfaces.

- Parameter Settings: Power 10%-20%, frequency 20-50kHz, scanning speed 1000-2000mm/s.
- Advantages: Suitable for large-scale or deep engraving, with clear marking effects and relatively low cost.
- Disadvantage: The heat-affected zone is relatively large, which may cause microcracks on the glass surface.

(2) Ultraviolet laser marking
The wavelength of the ultraviolet laser marking machine is 355 nanometers, which falls within the ultraviolet light range and contains high-energy photons, enabling "cold processing". When the ultraviolet laser marking machine engraves characters on the glass surface, it can avoid thermal damage and maintain the integrity of the glass surface.

- Parameter Settings: Power 20%-30%, frequency 50-100kHz, scanning speed 500-1000mm/s.
Advantages: High marking accuracy, small heat-affected zone, suitable for high-precision engraving requirements.
- Disadvantages: The equipment cost is relatively high, making it suitable for application scenarios with high precision requirements.

(3) Green laser marking
The wavelength of the green laser marking machine is 532 nanometers, which falls within the visible light range and has a good absorption effect on glass. The green laser marking machine can achieve high-contrast engraving effects and is suitable for fine marking on glass surfaces.

- Parameter Settings: Power 10%-20%, frequency 30-60kHz, scanning speed 800-1200mm/s.
- Advantages: High marking contrast, suitable for marking on colored glass or transparent glass.
- Disadvantages: It has a significant thermal impact on glass and requires precise parameter control.

Iii. Application Scenarios
Laser marking technology on glass surfaces has been widely applied in multiple fields. The following are some typical application scenarios:

(1) Food and beverage industry
In the food and beverage industry, glass bottles or glass packaging need to be marked with information such as the production date, shelf life, and trademark. Laser marking technology can achieve clear and long-lasting marks on the surface of glass, meeting the hygiene and safety requirements of the food industry.

(II) Medical device industry
In the field of medical devices, glass products (such as syringes, test tubes, microscope slides, etc.) need to be marked with information such as model, specification, and production date. Laser marking technology can achieve high-precision and high-contrast marking on the surface of glass, ensuring the traceability and safety of medical devices.

(3) Handicrafts and gifts industry
In the handicraft and gift industry, glass products (such as glass handicrafts, crystal products, etc.) need to be engraved with personalized words or patterns. Laser marking technology can achieve exquisite patterns and text engravings on the surface of glass, enhancing the artistic value and ornamental value of the products.

(4) Architectural decoration industry
In the field of architectural decoration, glass curtain walls, glass doors and Windows, etc. need to be marked with product information or have decorative pattern carvings. Laser marking technology can achieve large-area and high-precision marking on the surface of glass, meeting the demands of architectural decoration.

Iv. Advantages
1. High precision: Laser marking technology can achieve micron-level marking accuracy on glass surfaces, making it suitable for high-precision engraving requirements.
2. Non-contact processing: Laser marking is a non-contact processing method that does not cause mechanical stress or wear to the glass surface and is suitable for processing brittle materials.
3. Environmentally friendly and efficient: No chemical reagents are used in the laser marking process, meeting environmental protection requirements. Meanwhile, the processing speed is fast, making it suitable for large-scale production.
4. Permanent marking: The marks formed by laser marking are permanent and will not disappear due to friction, wear or chemical corrosion, ensuring the long-term readability of the marks.

V. Summary
Laser marking technology on glass surfaces has become highly mature and is capable of achieving high-precision, high-contrast, and non-contact marking effects. By choosing the appropriate type of laser marking machine and optimizing the parameter Settings, clear and long-lasting engraving effects can be achieved on the glass surface. Laser marking technology has been widely applied in fields such as food and beverages, medical devices, handicrafts and architectural decoration, providing an efficient, environmentally friendly and reliable solution for marking glass products.

.

.

Previous page: Black laser marking on titanium alloys can be achieved through specific methods Next page: Ceramic laser marking requires selecting the appropriate power based on specific requirements

Enhancing Precision in Wood Laser Marking through Process Improvements

Understanding Laser Marking Machine Shadowing Effects

Precise Channel Marking on Microfluidic Chips with MOPA Laser Marking Machines

Inhibiting the Heat Affected Zone with UV Laser Marking Machines

Maintaining Channel Wall Roughness Below 100 nm in Borosilicate Glass Microfluidic Chips with 1030 nm Femtosecond Laser Marking

Ensuring Secure Chuck Mounting on High-Speed Laser Marking Machine Rotating Axes

How to Engrave Vector Graphics with Fiber Laser Marking Machines

Ensuring Repeatability in Depth Measurement of Aluminum Laser Marking with 3D Microscopy

Laser Marking vs. Laser Engraving: Post-Processing and Investment Considerations

Preventing Accidental File Deletion on Laser Marking Machines

The surface of glass can be engraved with characters by a laser marking machine